Txheej txheem cej luam
P195GHyog aEuropean txheemnpe acarbon{0}}manganese hlautsim tshwj xeeb rausiab lub hom phiaj ntawm qhov kub siab. Thaum tsim rau hauv cov yeeb nkab, nws feem ntau yog siv rau hauv kev tsim cov boilers, tshav kub exchangers, superheaters, thiab lwm yam siab hlab ntsha.
1. Decoding lub npe: "P195GH"
Lub npe ua raws li tus qauv EN 10216 (Seamless steel raj rau lub hom phiaj siab). Ntawm no yog txhua yam txhais tau tias:
P: Sawv rau"siab,"qhia tias thawj daim ntawv thov yog rau siab- cov khoom siv.
195: Qhov no yogYam tsawg kawg nkaus yield zog (ReH)ntawm chav tsev kub, hauv MPa (MegaPascals). Yog li, 195 MPa yog qhov kev ntxhov siab uas cov khoom yuav pib deform plastically.
G: Sawv rau"Manganese"(los ntawm German "Mangan"), qhia tias qhov no yog carbon -manganese steel qhov twg manganese yog ib qho tseem ceeb alloying keeb.
H: Sawv rau"High Temperature,"txhais tau tias cov khoom siv kho tshuab tau lees paub ntawm qhov kub siab.
Cov qauv tseem ceeb sib npaug:
ASTM / ASME (USA):Qhov sib npaug ze tshaj plaws yogSIB-192rau seamless boiler raj. Txawm li cas los xij, cov tshuaj muaj pes tsawg leeg thiab lub zog tuaj yeem muaj qhov txawv me ntsis.
DIN (Lub Tebchaws Yelemees):Lub npe qub yogib 35.8.
2. Cov Khoom Siv Khoom (Chemical Properties)
P195GH yog ib qho qis- carbon steel nrog manganese ua lub ntsiab ntxiv dag zog. Ib qho tshuaj muaj pes tsawg leeg (raws li EN 10216-2) yog:
| Lub ntsiab | Cov ntsiab lus (%) |
|---|---|
| Cov pa roj carbon (C) | max . 0.13 - 0.20 |
| Manganese (Mn) | 0.40 - 1.20 |
| Silicon (Si) | max . 0.40 |
| Phosphorus (P) | max . 0.025 |
| Sulfur (S) | max . 0.020 |
Vim li cas qhov kev sib xyaw no?
Cov pa roj carbon tsawg:Muab qhov zooweldabilitythiabductility(lub peev xwm los tsim tsis tau tawg).
Manganese:Ua kom muaj zog thiab toughness yam tsis muaj kev cuam tshuam loj heev weldability.
Tsawg Sulfur & Phosphorus:Cov no yog impurities. Ua kom lawv qis txhim kho toughness thiab weldability.
3. Mechanical Properties
Cov khoom tseem ceeb uas ua rau nws tsim nyog rau boilers yog nws lub zog thiab nkag mus rau qhov kub thiab txias.
| Khoom | Tus nqi / Nqe lus piav qhia |
|---|---|
| Yield zog (Rp0.2) | min . 195 MPa(ntawm chav tsev kub) |
| Tensile zog (Rm) | 320 - 480 MPa (ntawm chav tsev kub) |
| Elongation (A) | min . 25% (qhia tau zoo ductility) |
| Daim ntawv thov kub | Feem ntau siv rau kev pabcuam kub txog li~ 450-500 degree(842-932℃F). |
| Creep Resistance | Tsim los tiv thaiv deformation nyob rau hauv qhov kev ntxhov siab tas li ntawm qhov kub thiab txias nyob rau lub sijhawm ntev. |
4. Cov yam ntxwv tseem ceeb & qhov zoo
Weldability zoo heev:Nws cov ntsiab lus carbon tsawg ua rau nws yooj yim heev rau vuam siv txhua txoj hauv kev yam tsis muaj ua ntej- cua sov lossis tom qab- vuam kev kho cua sov feem ntau.
Zoo Siab -Tsub Muaj Zog:Nws tuav nws cov txheej txheem kev ncaj ncees thiab tiv thaiv "creep" (qhib deformation nyob rau hauv kev ntxhov siab) ntawm kev khiav hauj lwm kub ntawm ntau boilers thiab superheaters.
Formability zoo:Nws tuaj yeem khoov thiab flanged nrog tus txheeb ze yooj yim.
Tus nqi -zoo:Raws li cov pa roj carbon steel, nws yog kev lag luam ntau dua li cov hlau alloy xws li P91 lossis stainless hlau, ua rau nws zoo tagnrho rau ntau yam uas tsis yog - corrosive daim ntaub ntawv.
5. Kev siv ntau
P195GH cov kav dej yog siv txhua qhov chaw muaj qhov xav tau kom muaj chav lossis dej kub hauv qhov siab. Cov ntawv thov ib txwm muaj xws li:
Boiler Tubes:Cov dej-cov phab ntsa, economizer, thiab tsim cov raj hauv hluav taws- raj thiab dej- raj boilers.
Superheaters thiab Reheaters:Cov ntu uas cov chav ua kom sov rau qhov kub siab heev. (Rau qhov chaw kub siab tshaj plaws, cov khoom siv siab tshaj tuaj yeem siv tau).
Thaum tshav kub kub Exchangers:Rau kev hloov cua sov ntawm cov kua.
Piping rau dej kub thiab chav:Hauv cov chaw tsim hluav taws xob, cov chaw tsim khoom lag luam, thiab cov tshuab cua sov.
6. Kev tsim khoom thiab cov qauv
P195GH kav dej feem ntauseamless, txhais tau hais tias lawv yog tsim los ntawm ib tug khoom billet uas yog pierced thiab stretched los ua ib tug yeeb nkab yam tsis muaj welded seam. Qhov no yog ib qho tseem ceeb heev rau siab -siab ncaj ncees.
Tus txheej txheem tswj hwm yogTS EN 10216-2: Seamless steel raj rau lub hom phiaj siab - Cov txheej txheem xa khoom: Ntu 2: Cov hlau tsis-alloy thiab alloy steel hlau nrog qhov ntsuas kub siab.
Cov lus piav qhia
| Feature | Nqe lus piav qhia rau P195GH |
|---|---|
| Txuj | TS EN 10216-2 |
| Hom | Carbon-Manganese hlau |
| Kev siv thawj zaug | Boiler Tubes, Cov kav dej siab ntawm qhov kub thiab txias |
| Cov khoom tseem ceeb | Min. Yield zog 195 MPa, Zoo Creep Resistance |
| Max Service Temp | ~ 450-500 degree |
| Weldability | Zoo heev |
| Main sib npaug | ASTM SA-192 (zoo li daim ntawv thov) |
Hauv kev xaus,P195GH Carbon Steel Boiler Yeeb Nkabyog ib qho tseem ceeb, txhim khu kev qha, thiab tus nqi- cov khoom siv tau zoo rau kev tsim lub siab- cov kabmob ntawm cov boilers thiab cov cua kub sib hloov ua haujlwm ntawm qhov kub siab, qhov corrosion tsis yog qhov kev txhawj xeeb tseem ceeb.
